Cleaning brush



FIG. 1 is a perspective view of the cleaning brush showing my new design;

FIG. 2 is similar to FIG. 1, viewed from another aspect;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a right side elevational view thereof;

FIG. 7 is a top plan view thereof; and,

FIG. 8 is a bottom plan view thereof.

The broken lines are for the purposes of illustrating portions of the cleaning brush and form no part of the claimed design. 

CLAIM The ornamental design for a cleaning brush, as shown and described. 